/* ===================================
   SOLAR FISH DRYER - MAIN STYLES
   =================================== */

/* CSS Variables */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --primary-light: #3b82f6;
    --secondary-color: #f59e0b;
    --secondary-dark: #d97706;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;

    /* Neutral Colors */
    --dark: #1f2937;
    --dark-light: #374151;
    --gray: #6b7280;
    --gray-light: #9ca3af;
    --light: #f3f4f6;
    --white: #ffffff;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background-color: var(--light);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   BOOTSTRAP NAVBAR CUSTOMIZATION
   =================================== */
/* Modern Navbar Styling */
.navbar {
    background-color: var(--white) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    padding: 0.75rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background-color: var(--white) !important;
    padding: 0.5rem 0;
    box-shadow: var(--shadow-md);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
}

.navbar-brand {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: flex;
    align-items: center;
    transition: var(--transition);
}

.navbar-brand:hover {
    transform: scale(1.02);
}

.navbar-brand i {
    background: linear-gradient(135deg, var(--secondary-color), var(--secondary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 1.5rem;
    margin-right: 0.75rem;
}

.nav-link {
    font-weight: 500;
    color: var(--dark-light) !important;
    padding: 0.5rem 1rem !important;
    margin: 0 0.25rem;
    position: relative;
    transition: var(--transition);
    border-radius: 8px;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background-color: rgba(37, 99, 235, 0.05);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: var(--transition);
    transform: translateX(-50%);
    border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 20px;
}

.nav-link.active {
    color: var(--primary-color) !important;
    font-weight: 600;
}

/* Dashboard Button Style */
.nav-dashboard-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white !important;
    padding: 0.6rem 1.25rem !important;
    border-radius: 50px !important;
    font-weight: 600 !important;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.2);
    margin-left: 0.5rem;
}

.nav-dashboard-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.nav-dashboard-btn::after {
    display: none !important;
}

/* User Dropdown */
.nav-user-toggle {
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    padding: 0.4rem 0.8rem !important;
    border-radius: 50px !important;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--dark) !important;
}

.nav-user-toggle:hover {
    background: #f1f5f9;
}

.nav-user-toggle i {
    font-size: 1.25rem;
    color: var(--primary-color);
}

.dropdown-menu {
    border: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border-radius: 15px;
    padding: 0.75rem;
    margin-top: 1rem !important;
    animation: fadeIn 0.2s ease-out;
}

.dropdown-item {
    border-radius: 10px;
    padding: 0.6rem 1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--dark-light);
}

.dropdown-item i {
    width: 20px;
    text-align: center;
    color: var(--gray);
}

.dropdown-item:hover {
    background-color: #f1f5f9;
    color: var(--primary-color);
}

.dropdown-item:hover i {
    color: var(--primary-color);
}

.dropdown-divider {
    border-top: 1px solid #f1f5f9;
    margin: 0.5rem 0;
}

.dropdown-item {
    border-radius: var(--radius-md);
    padding: 0.5rem 1rem;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(37, 99, 235, 0.05);
}

.dropdown-item i {
    width: 20px;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* OLD NAVBAR STYLES (Keep for compatibility) */
.navbar-old {
    background: var(--white);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-brand i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 1.5rem;
    height: 0.15rem;
    background: var(--dark);
    transition: var(--transition);
}

.nav-list {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-list a {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    color: var(--dark);
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-list a:hover,
.nav-list a.active {
    background: var(--primary-color);
    color: var(--white);
}

.nav-admin {
    background: var(--secondary-color);
    color: var(--white);
}

.nav-admin:hover {
    background: var(--secondary-dark);
}

.btn-login,
.btn-register {
    background: var(--primary-color);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 600;
}

.btn-login:hover,
.btn-register:hover {
    background: var(--primary-dark);
}

.btn-register {
    background: var(--secondary-color);
}

.btn-register:hover {
    background: var(--secondary-dark);
}

/* User Dropdown */
.nav-user-dropdown {
    position: relative;
}

.nav-user {
    background: var(--light);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-md);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    border-radius: var(--radius-md);
    min-width: 200px;
    margin-top: var(--spacing-xs);
    display: none;
    animation: fadeIn 0.3s;
}

.nav-user-dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm);
    color: var(--dark);
    border-radius: 0;
}

.dropdown-menu a:hover {
    background: var(--light);
    color: var(--primary-color);
}

/* ===================================
   MESSAGES/ALERTS
   =================================== */
.messages-container {
    position: fixed;
    top: 80px;
    right: var(--spacing-md);
    z-index: 9999;
    max-width: 400px;
}

.alert {
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border-left: 4px solid;
    animation: slideInRight 0.3s ease;
}

.alert-success {
    border-color: var(--success-color);
    background: #ecfdf5;
}

.alert-error {
    border-color: var(--danger-color);
    background: #fef2f2;
}

.alert-warning {
    border-color: var(--warning-color);
    background: #fffbeb;
}

.alert-info {
    border-color: var(--info-color);
    background: #eff6ff;
}

.alert i {
    font-size: 1.25rem;
}

.alert-success i {
    color: var(--success-color);
}

.alert-error i {
    color: var(--danger-color);
}

.alert-warning i {
    color: var(--warning-color);
}

.alert-info i {
    color: var(--info-color);
}

.alert-close {
    margin-left: auto;
    font-size: 1.5rem;
    color: var(--gray);
    cursor: pointer;
    background: none;
    border: none;
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
    min-height: calc(100vh - 400px);
    padding: var(--spacing-xl) 0;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: 1.25rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
}

.btn-secondary:hover {
    background: var(--light);
}

.btn-success {
    background: var(--success-color);
    color: var(--white);
}

.btn-danger {
    background: var(--danger-color);
    color: var(--white);
}

.btn-warning {
    background: var(--warning-color);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Cards */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-5px);
}

.card-header {
    border-bottom: 2px solid var(--light);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.card-body {
    padding: var(--spacing-md) 0;
}

.card-footer {
    border-top: 2px solid var(--light);
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ===================================
   FORMS
   =================================== */
.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
    color: var(--dark);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--light);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-control::placeholder {
    color: var(--gray-light);
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--dark);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-col h3,
.footer-col h4 {
    margin-bottom: var(--spacing-md);
    color: var(--secondary-color);
}

.footer-col p {
    opacity: 0.8;
    line-height: 1.8;
}

.footer-col ul li {
    margin-bottom: var(--spacing-xs);
}

.footer-col a {
    opacity: 0.8;
    transition: var(--transition);
}

.footer-col a:hover {
    opacity: 1;
    color: var(--secondary-color);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: var(--dark-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.social-links a:hover {
    background: var(--secondary-color);
}

.contact-info i {
    margin-right: var(--spacing-xs);
    color: var(--secondary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--dark-light);
    opacity: 0.7;
}

.footer-bottom i {
    color: var(--danger-color);
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */
@media (max-width: 768px) {
    .navbar {
        background-color: var(--white) !important;
        backdrop-filter: none;
    }

    .nav-link {
        padding: 0.75rem 1rem !important;
        margin: 0.25rem 0;
    }

    .nav-link::after {
        display: none;
    }

    .nav-dashboard-btn {
        margin-left: 0 !important;
        margin-top: 0.5rem;
        display: inline-block;
        width: 100%;
        text-align: center;
    }

    .nav-user-toggle {
        margin-left: 0 !important;
        margin-top: 0.5rem;
        border-radius: 8px !important;
        width: 100%;
    }

    .dropdown-menu {
        box-shadow: none;
        border: 1px solid #f1f5f9;
        margin-top: 0 !important;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .messages-container {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }
}